How 2013 US Open champion Serena Williams stays fit

On Sunday, 31-year-old Serena Williams made history by becoming the oldest woman to lift a singles Grand Slam as she beat Victoria Azarenka 7-5, 6-7 (6/8), 6-1 to claim her 17th singles Grand Slam title. Along with that she has 13 women’s doubles titles and two mixed doubles titles which puts her in the pantheon of greats as far as the woman’s game is concerned. Only Steffi Graff has more singles titles with 22 in the Open Era with Margaret Court holding the all-time record with 24.